Creator
- Napa County Conservation, Development and Planning Department1
- Napa County Department of Environmental Management1
- Napa County Geographic Information Systems 2
- Napa County Information Technology Services1
- Napa County Local Enforcement Agency1
- Nathaniel D. Mueller2
- National Atlas of the United States57
- National Center for Ecological Analysis and Synthesis12
- National Climatic Data Center (U.S.)65
- National Energy Information Center (U.S.)15
- National Geophysical Data Center11
- National Geophysical and Solar-Terrestrial Data Center19
- National Marine Protected Areas Center (U.S.)2
- National Ocean Service Hydrographic Surveys2
- National Renewable Energy Laboratory (U.S.)1
- National Water and Climate Center (U.S.)65
- Nationale geologiske undersøgelser for Danmark og Grønland1
- Nature Conservancy (U.S.)19
- Nature Kenya1
- Naval Air Systems Command (NAVAIR)3